The DeMARK "INTEGRITY CHAMBER"
controls damage (mushrooming) of ground rods when driving with impact hammers.
This allows for use of threadless ground rod couplers without the use of
additional tools.
This concept has been applied to a variety of Driving Bit styles that will
fit all "impact hammers", "demolition hammers", and "breakers" that use
hydraulic, pnuematic, or electric power. The "INTEGRITY CHAMBER" is also
available in a driving cap that fits into some existing "bits" that are
used on driving studs for (threaded couplers).
DeMARK Drive Bits are available for Fairmont,
Stanley, Ingersoll Rand, Chicago Pneumatic, Kango, Bosch, Milwaukee, as
well as other special hammers.